WO2005096442A1 - 異方性導電膜およびその製造方法 - Google Patents
異方性導電膜およびその製造方法 Download PDFInfo
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- WO2005096442A1 WO2005096442A1 PCT/JP2005/006584 JP2005006584W WO2005096442A1 WO 2005096442 A1 WO2005096442 A1 WO 2005096442A1 JP 2005006584 W JP2005006584 W JP 2005006584W WO 2005096442 A1 WO2005096442 A1 WO 2005096442A1
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- anisotropic conductive
- conductive film
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09D179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/7076—Coupling devices for connection between PCB and component, e.g. display
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/26—Porous or cellular plastics
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/01—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the form or arrangement of the conductive interconnection between the connecting locations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
- H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
- H01R13/2414—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means conductive elastomers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
- H05K3/323—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives by applying an anisotropic conductive adhesive layer over an array of pads
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/314—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive layer and/or the carrier being conductive
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0104—Properties and characteristics in general
- H05K2201/0116—Porous, e.g. foam
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09945—Universal aspects, e.g. universal inner layers or via grid, or anisotropic interposer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10227—Other objects, e.g. metallic pieces
- H05K2201/10378—Interposers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24322—Composite web or sheet
Definitions
- the present invention relates to an anisotropic conductive film and a method for manufacturing the same, and more particularly, to an anisotropic conductive film suitably used for connection of electronic components and substrates having a narrow conductor gap and a method for manufacturing the same.
- the commonly known ACF 100 has a structure in which conductive particles 102 are dispersed in an adhesive resin 101 formed in a film shape.
- the resin 101 flows away and the chip electrode 105 and the substrate electrode 106 are interposed.
- the conductive particles 102 are pinched in a crushed state. While maintaining this state, the resin 1 0 1
- the electrodes 105 and 106 are electrically connected via the conductive particles 102.
- the adjacent electrodes 105 (106) are electrically insulated by the resin 101. Further, by curing the resin 101, the chip 103 and the substrate 104 are mechanically connected.
- the purpose of using the conductive particles is mainly (1) to electrically connect the electrodes, (2) to insulate the circuits, (3) to vary the height of the electrodes, Absorbing deflection and the like.
- Non-Patent Document 1 Motohide Takeichi, “Flip-Chip Mounting Technology Using Anisotropic Conductive Film”, Electronic Materials, Industry Research Committee, May 2001, separate volume, p. 1 30— p. 133
- a resin resin which is a metal resin such as Ni-Au applied to minute resin particles with an elastic deformation region and a diameter of about 3 to 5 ⁇ .
- the use of plated particles is described.
- Non-Patent Document 1 describes that conductive particles having a surface coated with an insulating material are used as the conductive particles. In this case, in the film thickness direction, the insulating material on the surface of the particles is ruptured by the pressing force, so that the conductive particles and the electrodes are electrically connected. On the other hand, in the direction of the film surface, the insulating material on the surface of the particles is not ruptured.
- Patent Document 1 Japanese Unexamined Patent Publication No. 8-273442 discloses a type of ACF different from the ACF shown in FIG. 16 in which a water-soluble film is provided on both sides of a thermoplastic film and penetrated in the film thickness direction. An ACF in which a hole is filled with a conductive material is described.
- Non-Patent Document 2 (Masatsugu Shimomura, “Formation and Functionalization of Nano-Mesohol Structure by Self-Assembly of Polymer Materials”, Functional Materials, Cemshi-Ichi Publishing Co., Ltd., October 2003, vol. 23, No. 10, p. 18-p. 26) and Non-Patent Document 3 (Masatoshi Shimomura, “Pattern by self-organization” Development of Metallization and Micromachining Technology ”, Materia, The Japan Institute of Metals, 2003, Vol. 42, No. 6, p. 457-p. 460) A porous film made of a polymer having a honeycomb structure in which pores are regularly arranged in a film thickness direction is described.
- Patent Document 2 Japanese Unexamined Patent Application Publication No. 2003-80558 also discloses a polyimide having a honeycomb structure which is not an ACF but has pores arranged regularly in the film thickness direction. A porous membrane is described.
- the ACF shown in Fig. 16 is dispersed in the adhesive resin to secure insulation in the film surface direction. It is necessary to reduce the diameter of the conductive particles. However, from the viewpoint of ensuring conduction in the film thickness direction, it is difficult to reduce the diameter of the conductive particles beyond the variation in the height of the conductor of the connected object.
- the AC F shown in Fig. 16 has a natural limit to respond to the narrow pitch of connected objects. Therefore, there has been a problem that it is difficult to further reduce the conductor pitch of the object to be connected (currently about 40 ⁇ ).
- the ACF described in Non-Patent Document 1 has an insulating property in the film surface direction even if the dispersion density of the conductive particles is increased because the surface of the conductive particles is coated with an insulating material. It is considered easy to do. However, even with this ACF, for the same reason as described above, it is difficult to reduce the diameter of the conductive particles beyond the variation in height of the conductor of the connected object. Therefore, even with this AC F, there is naturally a limit S to cope with the narrow pitch of the connected object. However, coating the minute particles with the insulating material itself There is also a problem that it is difficult.
- the ACF described in Patent Document 1 is filled with a conductive substance in the hole penetrated in the film thickness direction, so that the ACF is covered more than the ACF in which conductive particles are dispersed in the resin. It is thought that it is easy to cope with the narrow pitch of connected objects.
- this ACF it is necessary to use X-rays, SR (synchrotron radiation), etc., since many small through holes are provided in the film thickness direction. Therefore, there was a problem that the manufacturing cost was high and the mass productivity of long products was poor.
- Non-Patent Documents 2 and 3 describe that a porous membrane made of a polymer having a honeycomb structure in which pores are regularly arranged in the thickness direction is used as a substrate for culturing cells. However, there is no disclosure or suggestion of using the material for the anisotropic conductive film.
- the problem to be solved by the present invention is that it is possible to cope with a further reduction in the pitch of an object to be connected while maintaining connection reliability. It is to provide a manufacturing method. Disclosure of the invention
- an anisotropic conductive film according to the present invention has a large number of holes penetrating in a film thickness direction, the holes are arranged in a honeycomb shape, and the inner wall surface of the holes is directed outward.
- the polymer that forms the porous membrane is polysulfone, polyether snorephone, polyphenylene sanolefide, polyimide, polyamide imide, siloxane-modified polyimide, siloxane-modified polyamide imide, polyether imide, and polyether ether. It is preferably made of one or more polymers selected from ketones.
- the porous membrane is relatively opposed to a supporting substrate cast with a polymer solution containing at least an organic solvent having hydrophobicity and volatility, a polymer soluble in the organic solvent, and an amphiphilic substance. It is preferable that it is formed by allowing it to exist in an atmosphere having a humidity of 50% or more.
- the porous film and the conductive material may include a hydrophobic and volatile organic solvent, a polymer soluble in the organic solvent, an amphiphilic material, and a conductive material. It is preferable that the substrate is formed by allowing the support substrate on which the molecular solution is cast to exist in an atmosphere having a relative humidity of 50% or more.
- the polymer soluble in the organic solvent may be polysnolephone, polyate / resnolephone, polyphenylene sanolefide, One or more polymers selected from siloxane-modified polyimide and siloxane-modified polyamideimide can be suitably used.
- the above-mentioned porous membrane is prepared by casting a supporting substrate cast with a polymer solution containing at least an organic solvent having hydrophobicity and volatility and an amphiphilic polymer under an atmosphere having a relative humidity of 50% or more. It may be formed by performing the above.
- the porous membrane and the conductive substance may be formed on a supporting substrate cast with a high-molecular solution containing at least an organic solvent having hydrophobicity and volatility, an amphiphilic polymer, and a conductive substance at a relative humidity of 5%. It may be formed by being present in an atmosphere of 0% or more.
- the amphiphilic polymer may be a high molecular weight polymer having a hydrophilic group introduced into the main chain and Z or the side chain.
- a polyionic complex of a molecule and a force-thiogenic lipid for example, a polyionic complex of a polyamic acid and a cationic lipid can be suitably used.
- polyionic complex of an amic acid and a thiothionic lipid is used, the porous membrane is preferably subjected to an imidization treatment after the formation of the membrane.
- the diameter of the hole of the porous film is smaller than the narrowest one among the intervals of the plurality of conductors of the object, and The spacing is preferably smaller than the narrowest of the conductor widths.
- the conductive substance is formed of a group of conductive particles.
- the conductive particles metal particles and the like can be suitably used.
- the metal of the metal particles one or more metals selected from Ag, Au, Pt, Ni, Cu and Pd can be suitably used.
- the group of metal particles filled in the hole is heat-sealed and integrated.
- the adhesive layer is a pre-preda in which a thermosetting resin is in a semi-cured state.
- an epoxy resin or the like can be suitably used as the thermosetting resin.
- the method for producing an anisotropic conductive film according to the present invention has a large number of holes penetrating in the film thickness direction, the holes are arranged in a honeycomb shape, and the inner wall surfaces of the holes are curved outward.
- the porous membrane is formed by casting a polymer solution containing at least an organic solvent having hydrophobicity and volatility, a polymer soluble in this organic solvent, and an amphiphilic substance. It is preferable that the substrate is present in an atmosphere having a relative humidity of 50% or more.
- the formation of the porous film may be performed by subjecting a support substrate, to which a polymer solution containing at least a hydrophobic and volatile organic solvent and an amphiphilic polymer is cast, to an atmosphere having a relative humidity of 50% or more. It is good to have it exist.
- another method for producing an anisotropic conductive film according to the present invention has a plurality of holes penetrating in the film thickness direction, wherein the holes are arranged in a honeycomb shape and the inner wall surface of the holes is directed outward.
- the formation of the porous film in which the conductive material is filled in the holes is performed by using an organic solvent having hydrophobicity and volatility, a polymer soluble in the organic solvent, an amphipathic material, It is preferable that the support substrate in which a polymer solution containing at least a conductive substance is cast is present in an atmosphere having a relative humidity of 50% or more.
- the formation of the porous film in which the conductive material is filled in the pores is performed by a polymer solution containing at least an organic solvent having hydrophobicity and volatility, an amphiphilic polymer, and a conductive material. It is preferable that the support substrate on which is cast is present in an atmosphere having a relative humidity of 50% or more.
- the anisotropic conductive film according to the present invention includes a porous film having a large number of fine holes arranged in a honeycomb shape, and the conductive material is filled in the holes of the porous film. .
- the connection object is maintained while maintaining the connection reliability as compared with the conventional type of anisotropic conductive film in which conductive particles are dispersed in a resin. It is possible to cope with a further narrow pitch.
- the porous membrane is a polymer containing at least a hydrophobic and volatile organic solvent, a polymer soluble in the organic solvent, and an amphiphilic substance.
- the supporting substrate cast from a solution or a polymer solution containing at least a hydrophobic and volatile organic solvent and an amphiphilic polymer is subjected to relative humidity.
- the anisotropic conductive film according to the present invention has advantages that it can be easily and inexpensively manufactured, and that a long product can be easily mass-produced.
- the polymer that forms the porous membrane is composed of polysulfone, polyether snorehon, polyphenylene sanolefide, polyimide, polyamide imide, siloxane-modified polyimide, siloxane-modified polyamide, polyetherimide, and polyetheretherketone.
- the porous membrane and the conductive material may include at least an organic solvent having hydrophobicity and volatility, a polymer soluble in the organic solvent, an amphipathic material, and a conductive material.
- a support substrate cast from a polymer solution containing a molecular solution or an organic solvent having hydrophobicity and volatility, an amphiphilic polymer, and a conductive material is exposed to an atmosphere having a relative humidity of 50% or more.
- the porous film is formed by the technique of allowing the film to exist, a porous film in which a conductive substance is filled in the holes during the film forming process can be formed more easily.
- an anisotropic conductive film using such a porous film can be manufactured more simply and inexpensively because it is not necessary to refill the hole of the porous film with a conductive substance.
- advantages such as easy mass production.
- a polymer having a hydrophilic group introduced into a main chain and / or a side chain is used as an amphiphilic polymer.
- Polyionic complexes with cationic lipids such as polyionic complexes of polyamic acids and cationic lipids When any of them is used, it is possible to obtain an anisotropic conductive film provided with a porous film made of a polymer that is hardly dissolved in a hydrophobic organic solvent.
- amphiphilic polymer is a polyionic complex of a polyamic acid and a cationic lipid
- an imidization treatment is performed after the formation of the film to provide a porous membrane made of polyimide.
- an anisotropic conductive film having excellent heat resistance can be obtained.
- the diameter of the hole of the porous film is smaller than the narrowest distance among the plurality of conductors of the connected object, and the distance between the holes.
- the width of these conductors is smaller than the narrowest, insulation in the film surface direction is assured, and high connection reliability is obtained.
- the anisotropic conductive film according to the present invention when the conductive substance is made of a group of conductive particles, the holes are easily filled with the conductive particles uniformly, so that the conduction in the film thickness direction is excellent. Further, when the conductive particles are metal particles, can lower the melting point of the metal by the diameter of the particles, Rere 0 heat sealed at a low temperature
- the gap between the metal particles is reduced and the contact resistance is reduced, reducing the electrical resistance in the film thickness direction. be able to.
- the electric resistance in the film thickness direction can be reduced.
- the metal of the metal particles is composed of one or more selected from Ag, Au, Pt, Ni, Cu and Pd, the film has excellent electrical conductivity, It is easy to obtain conduction in the thickness direction.
- the adhesive layer when the adhesive layer is a pre-preda in which the thermosetting resin is in a semi-cured state, the adhesive layer is flow-excluded in the gap between the conductors of the connected object. It is also easy to be As a result, high connection reliability can be secured.
- thermosetting resin is an epoxy-based resin
- the adhesiveness with the connected portion is excellent.
- an anisotropic conductive film according to the present invention compared to a conventional type of anisotropic conductive film in which conductive particles are dispersed in a resin, the connection reliability is maintained while maintaining the connection reliability. It is possible to manufacture an anisotropic conductive film capable of coping with a further narrow pitch of the object.
- the formation of the porous film is performed by a polymer solution containing at least an organic solvent having hydrophobicity and volatility, a polymer soluble in the organic solvent, and an amphipathic substance, or a hydrophobic solution.
- a support substrate cast with a polymer solution containing at least a volatile organic solvent and an amphiphilic polymer is present in an atmosphere having a relative humidity of 50% or more, the A porous film having a large number of holes arranged in a cam shape can be easily formed. Therefore, an anisotropic conductive film can be manufactured at low cost.
- connection reliability is maintained as compared with a conventional type anisotropic conductive film in which conductive particles are dispersed in a resin.
- the formation of the porous film in which the conductive material is filled in the pores is performed by using an organic solvent having hydrophobicity and volatility, a polymer soluble in the organic solvent, an amphiphilic substance, and a conductive material.
- a support substrate cast with a polymer solution containing at least a hydrophilic substance, or a polymer solution containing at least an organic solvent having hydrophobicity and volatility, an amphiphilic polymer, and a conductive material is subjected to relative humidity. If it is carried out in an atmosphere of 50% or more, it is not necessary to refill the hole of the porous film [5] with a conductive material, so that an anisotropic conductive film can be produced at lower cost. be able to.
- FIG. 1 is a cross-sectional view schematically showing the configuration of the anisotropic conductive film according to the present invention.
- FIGS. 2A and 2B are diagrams schematically showing the configuration of a porous film in an anisotropic conductive film according to the present invention, wherein FIG. 2A is a cross-sectional view of the porous film, and FIG. It is a figure. ,
- FIG. 3 is a view schematically showing a state in which a conductive substance is filled in the pores of the porous film shown in FIG.
- FIG. 4 is a diagram schematically illustrating the principle that a porous film having a large number of holes arranged in a honeycomb shape is spontaneously formed.
- FIG. 5 is a diagram for schematically explaining a method of using the anisotropic conductive film according to the present invention.
- FIG. 6 is an electron microscopic image of a porous film made of polysulfone obtained at the time of producing the anisotropic conductive film according to Example 1.
- FIG. 7 is an electron microscope image of a porous film obtained by fabricating the anisotropic conductive film according to Example 1 and having pores filled with Ag particles.
- FIG. 8 is an electron microscopic image of a porous film made of polysulfone obtained at the time of producing the anisotropic conductive film according to Example 2.
- FIG. 9 is an electron microscope image of a porous film obtained by fabricating the anisotropic conductive film according to Example 2 and having pores filled with Ag particles.
- FIG. 10 is an electron microscope image of a porous film made of siloxane-modified polyimide obtained at the time of producing the anisotropic conductive film according to Example 3.
- FIG. 11 is an electron microscopic image of a porous film obtained by fabricating the anisotropic conductive film according to Example 3 and having pores filled with Ag particles.
- FIG. 12 is an electron microscope image of a porous film made of a siloxane-modified polyimide obtained at the time of producing the anisotropic conductive film according to Example 4.
- FIG. 13 shows the inside of the hole obtained at the time of manufacturing the anisotropic conductive film according to Example 4. 1 is an electron microscopic image of a porous membrane filled with Ag particles.
- FIG. 14 is a diagram schematically showing a comb-shaped electrode used when anisotropic conductivity was evaluated.
- FIG. 15 (a) is a diagram schematically illustrating the evaluation of the conduction performance in the film thickness direction
- FIG. 15 (b) is a diagram schematically illustrating the evaluation of the insulation performance in the film surface direction.
- FIG. 16 is a diagram showing the structure of a typical conventional anisotropic conductive film and the connection principle thereof. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a cross-sectional view schematically showing the configuration of the anisotropic conductive film according to the present invention.
- FIG. 2 is a diagram schematically showing a configuration of a porous film in the anisotropic conductive film according to the present invention.
- FIG. 3 is a diagram schematically showing a state in which a hole is filled with a conductive substance in the porous film shown in FIG.
- the present ACF the configuration of the anisotropic conductive film according to the present invention
- the present ACF 10 basically includes a porous film 12, a conductive substance 14, and an adhesive layer 16.
- the porous film 12 is formed of a polymer, and has a large number of holes 18 penetrating in the film thickness direction as shown in FIG. 2 (a).
- the inner wall surface 22 of each of the holes 18 is curved in a substantially spherical shape toward the outside. Further, as shown in FIG. 2B, the holes 18 are arranged in a honeycomb shape, and the adjacent holes 18 are separated from each other by a partition wall 20.
- the diameter and spacing of the holes in the porous film are determined by the width and width of a plurality of conductors (for example, projecting electrodes, wiring patterns, etc.) of the connected object (for example, IC chip, flexible printed wiring board: FPC, etc.) Consider spacing etc. And then decide.
- a plurality of conductors for example, projecting electrodes, wiring patterns, etc.
- the connected object for example, IC chip, flexible printed wiring board: FPC, etc.
- the diameter of the hole is smaller than the narrowest of the intervals of the plurality of conductors of the object to be connected. It is desirable that the distance between the holes be small and smaller than the narrowest of the widths of the conductors of the object.
- the diameter of the hole is 1 Z2 or less, which is the narrowest among the intervals of the plurality of conductors of the object, and the interval of the hole is the width of the plurality of conductors of the object.
- the narrowest one is better to be 1 Z 2 or less.
- the diameter of the hole refers to the average value of the diameter R of the opening of the hole appearing on the film surface or the back surface, and the average is the distance between the holes.
- the diameter R and the distance L may be measured from an electron micrograph, an optical micrograph, or the like of the surface of the porous film.
- the thickness of the porous film may be determined in consideration of the mechanical strength, withstand voltage and the like of the ACF. Preferably, it is in the range of 1 to 100 ⁇ m, more preferably 5 to 50 ⁇ m.
- polysulfone examples include polysulfone, polyether snorephone, polyphenylene sanolefide, polyimide, polyimide imide, siloxane-modified polyimide, and siloxane-modified polyimide imide.
- the conductive substance 14 is basically filled in the pores 18 of the porous film 12 as shown in FIG.
- the conductive material 14 preferably has a protrusion 24 slightly protruding outside the hole 18 from the viewpoint of improving the reliability of electrical connection in the film thickness direction.
- the height of the protruding portion may be determined in consideration of variations in the height of the conductor of the connected portion. It is preferably in the range of 0.1 to 10 ⁇ , more preferably in the range of 1 to 5 ⁇ m.
- the conductive substance is preferably made of a group of conductive particles from the viewpoint of being easily filled uniformly into the fine pores and having excellent conduction in the film thickness direction.
- the average diameter of the conductive particles may be determined according to the pore diameter of the porous film and the like. Preferably, it is about ⁇ or less.
- conductive particles include metal particles, resin-coated particles, and carbon particles. These may be used alone or in combination of two or more.
- metal particles can be suitably used. This is because the electric resistance is small, and the melting point of the metal is lowered due to the reduction in the diameter of the particles.
- the metal particles include Ag particles, Au particles, Pt particles, Ni particles, Cu particles, Pd particles, and the like.
- the above may be mixed. This is because these metal particles are excellent in electrical conductivity, and thus can easily conduct in the thickness direction.
- Ag particles can be preferably used.
- particles having at least a metal surface such as metal particles or resin-coated particles are used as the conductive particles
- a group of these particles filled in the pores is thermally fused in the pores. Being integrated Is preferred. This is because the gap between these particles is reduced, the contact resistance is reduced, and the electrical resistance in the film thickness direction is reduced. Further, the organic substance and the like existing between the particles are removed by the heat fusion, so that the electric resistance in the film thickness direction is also reduced.
- all the pores of the porous film may be filled with a conductive substance, or some of the pores may not be filled with a conductive substance. May be. That is, at least one or more of the holes facing the conductor of the object to be connected may be filled with the conductive material.
- the adhesive layer 16 is coated on the front and back surfaces of the porous film 12 in which the hole 18 is filled with the conductive substance 14 as shown in FIG.
- the thickness of the adhesive layer may be determined in consideration of the height of the conductor of the object to be connected, the interval between the conductors, and the like. Preferably, it is in the range of 0.1 to 100 ⁇ , more preferably in the range of 1 to 50 ⁇ m.
- the adhesive layer material any material can be used as long as it has an adhesive property and an insulating property with the object to be connected.
- a preferred example is a pre-predder in which a thermosetting resin such as an epoxy resin, an unsaturated polyester resin, a bismaleimide resin, and a cyanate resin is in a semi-cured state.
- a thermosetting resin such as an epoxy resin, an unsaturated polyester resin, a bismaleimide resin, and a cyanate resin is in a semi-cured state.
- thermosetting resin an epoxy-based resin can be suitably used from the viewpoint of, for example, excellent adhesion to a connected portion.
- the method for producing the ACF basically includes a step of forming a porous film, a step of filling a conductive material in pores of the porous film, and coating an adhesive layer on both surfaces of the porous film. Or a step of forming a porous film in which pores are filled with a conductive substance, and a step of coating both surfaces of the porous film with adhesive layers.
- the technique is to dissolve a polymer in a volatile organic solvent that does not mix with water and to cast a support substrate with this polymer solution under high humidity conditions. .
- a porous film having a large number of holes arranged in a honeycomb shape is spontaneously formed according to the following principle. That is, as shown in Figure 4, 1) Latent heat when the organic solvent evaporates causes water molecules in the air to condense and become minute water droplets 26, which are closely packed on the surface of the polymer solution 28. . 2) Further, water droplets 26 are transported to the interface between the polymer solution 28 and the support substrate 30 by convection and capillary force generated in the polymer solution 28 by latent heat. 3) Water drops 26 are fixed on the support substrate 30 by the retreat of the organic solvent.
- the regularly arranged water droplets 26 are formed into a rectangular shape, and a porous film 12 having a large number of pores 18 arranged in a honeycomb shape is formed.
- the inner wall surface 22 of the hole 18 is curved outward.
- the polymer solution a solution containing at least an organic solvent having hydrophobicity and volatility, a polymer soluble in the organic solvent, and an amphiphilic substance can be used.
- hydrophobic and volatile organic solvents examples include halogenated compounds such as chloroform, methylene chloride, aromatic hydrocarbons such as benzene, tonolene and xylene, esters such as ethyl acetate and butyl acetate, and methyl dimethyl acetate. And ketones such as ketone (MEK) and acetone. These may be used alone or in combination of two or more.
- polysulfone examples include polysulfone, polyether sulfone, polyphenylene sulfide, siloxane-modified polyimide, siloxane-modified polyamide, and the like.One or more of these may be mixed. May be used. When polyimide or polyamideimide is used, it is modified with siloxane to improve the solubility in the organic solvent.
- amphipathic substance is a so-called surfactant and refers to a compound having both a hydrophobic part and a hydrophilic part.
- This amphiphilic substance is mainly added for the purpose of stabilizing water droplets formed on the surface of the polymer solution. It is presumed that the group of water droplets is stabilized because the hydrophobic part of the amphiphilic substance is compatible with the hydrophobic organic solvent, and water is easily retained in the space of the reverse micelle generated by this.
- amphiphilic substance examples include a polymer having a hydrophilic acrylamide polymer as a main chain skeleton, a dodecyl group as a hydrophobic side chain, and a ratatose group or a carboxyl group as a hydrophilic side chain.
- a polyionic complex of an anionic polysaccharide such as heparin dextran sulfate and a quaternary long-chain alkylammonium salt may be used, and these may be used alone or in combination of two or more. .
- the concentration of the polymer contained in the polymer solution is preferably in the range of 0.1 to 50% by weight, and more preferably in the range of 0.1 to 10% by weight. If the concentration of the polymer is within this range, a porous film having a sufficient mechanical strength can be obtained, and a sufficient honeycomb structure can be obtained.
- amphiphilic substance is contained in the polymer solution, with respect to the polymer, 0 0 1-2 0 weight 0/0, preferably 0 0 5:.. 1 0 wt 0/0 It is preferable to add within the range. If the amphiphilic substance is added within this range, the honeycomb structure can be obtained stably.
- a polymer containing at least a hydrophobic and volatile organic solvent and an amphiphilic polymer is used instead of the polymer solution described above.
- a solution may be used.
- amphiphilic polymer refers to a polymer having a combination of a hydrophobic site and a hydrophilic site.
- amphiphilic polymers include polyester ether ketones and polyimides having a hydrophilic group such as a SO 3 H group or a COOH group introduced into the main chain and / or the side chain. , Polyamides, polyetherimides, etc. and polyionic complexes of cationic lipids and polyamic acids and polylipidic complexes of cationic lipids.One or more of these are mixed. You may use it.
- polyamic acid is a resin composition obtained by polymerizing tetracarboxylic dianhydride and a diamine compound in a polar solvent.
- examples of the polyamic acid include 3,3,4,4'-biphenyltetracarboxylic acid, 3,3,4,4'-biphenylethertetracarboxylic acid, 3,3,4,4, -biphenylsulfonetetracarboxylic acid , 3, 3'4,
- diamine compound examples include p-phenylenediamine, m-phenylenediamine, 2,5-diaminotoluene, 2,6-diaminotoluene, 4,4 diaminobiphenyl, 3,3, -dimethinolelate 4,4 'Diaminobiphenyl, 3,3' Dimethoxy-1,4,4-diaminobiphenyl, diaminodiphenylinmethane, diaminodiphenylenothene, 2,2,1-diaminodiphenylepropane , Bis (3,5-1-Jetinole 41-Aminophenolene) Methane, diaminodiphenylenolesnorehone, diaminobenzophenone, diaminonaphthalene, 1, 4-bis (4-aminophenol) benzene, 1, 4-bis (4 Benzene, 9,10-bis (4-aminophenol) anthracene, 1,3-bis (4-bis
- Examples of the cationic lipid include an aliphatic ammonium salt compound having 4 or more carbon atoms and an alicyclic ammonium salt compound.
- primary amines such as octylamine, decylamine, tetradecylamine, hexadecyamine, stearylamine, docosylamine, cyclohexinoleamine and the like; t ⁇ , dipentinoleamine, dihexyl / reamine , Dioctylamine, Didecinoleamine, Ditetradecylamine, Dihexadecylamine, Distearenoleamine, Didocosylamine, N-Methylenoleoctinoleamine, N-Methyl / n-Desizoleamine, N-Methylen-n-tetradecinoleamine, N—Methylenol n—Hexadecinoleamine, N—Methylenol n—Otatadecinoleamine, N—Methyl / Len n Eicosylamine, N—Methylennyl n—
- the polyionic complex of the polyamic acid and the cationic lipid is dissolved in a solution containing the neutralized polyamic acid with a base in a cationic lipid or in an organic solvent that can be used for the polymerization of the above-mentioned acidic acid. What is necessary is just to obtain by mixing the solution of the made cationic lipid.
- a polyionic complex of a polyamic acid and a functional lipid it is preferable to imidize the formed membrane by a known method. This is because the polyamic acid is closed to form a porous film made of polyimide.
- the concentration of the amphiphilic polymer contained in the polymer solution is used. Is 0.1 to 50% by weight, preferably 0.1 to 10% by weight. It is preferably within the range of / 0 .
- hydrophobic and volatile organic solvents are the same as those described above, and a description thereof will be omitted.
- the support substrate on which the above-described polymer solution is cast may be made of an inorganic material such as glass, metal, silicon wafer, or a polymer such as polypropylene, polyethylene, polyetherketone, or fluororesin. Materials, water, liquid paraffin, and the like.
- the amount of the polymer solution cast is such that the diameter of the hole of the porous membrane is smaller than the narrowest distance among the conductors of the object, and the distance between the holes is smaller than the distance of the hole.
- the width may be adjusted as appropriate, for example, to make it smaller than the narrowest of the conductors of the object.
- the casting amount of the polymer solution is preferably such that the coating thickness is in the range of 50 to 350 ⁇ m, and preferably in the range of 150 to 200 ⁇ m. Further, it is desirable that the support substrate on which the polymer solution is cast is present in an atmosphere having a relative humidity of 50% to 95%. If the relative humidity is less than 50%, dew condensation tends to be insufficient, and if it exceeds 95%, environmental control tends to be difficult.
- the polymer solution may be cast on the support substrate in an atmosphere at a relative humidity of 50% to 95%, or the support substrate in which the polymer solution is cast in advance may be used. May be placed in an atmosphere at a relative humidity of 50% to 95%. The air having a relative humidity of 50% to 95% may be blown to the polymer solution.
- heating and drying are performed so as not to affect the formation of the porous film in order to promote evaporation of the organic solvent and evaporation of water droplets arranged on the surface of the polymer solution. And so on.
- the method of filling the pores of the porous film with a conductive substance may be appropriately selected in consideration of the type and properties of the conductive solid substance used.
- Examples of the method for filling the conductive material include a method in which the conductive solution is further contained in the polymer solution. That is, when a conductive material is allowed to coexist in a polymer solution used for producing a porous film, a porous film filled with the conductive material in its pores is spontaneously formed during the film formation process. Therefore, according to this method, it is not necessary to refill the hole of the porous film with the conductive substance, and thus there is an advantage that the step of filling the hole with the conductive substance in the porous film can be omitted.
- the content of the conductive substance in the polymer solution is preferably in the range of 1 to 52% by weight, and more preferably in the range of 1 to 10% by weight. Further, as the conductive substance, it is preferable to use conductive particles having an average particle size of about 1 zm or less.
- Other methods of filling the conductive substance include, for example, dispersing the conductive substance in a solvent in which the polymer is insoluble, and immersing the porous membrane in the dispersion solution, so that the inside of the pore and the outside of the pore are slightly outside. And a method of adsorbing a conductive substance.
- the solvent is alcohol such as ethanol. Solvents, water, ester solvents, amide solvents, hydrocarbon solvents, ketone solvents, ether solvents and the like.
- the content of the conductive substance in the dispersion solution is preferably in the range of 1 to 80% by weight, more preferably 1 to 10% by weight.
- As the conductive substance it is preferable to use conductive particles having an average particle size of about 1 ⁇ or less. Note that the pulling speed, immersion time, and the like when pulling up the porous film from the dispersion solution may be variously adjusted according to the pore size of the porous film, the content of the conductive substance in the dispersion solution, and the like.
- a porous film is placed on a glass substrate or the like whose surface is modified with an alkoxide of the same kind of metal as the metal particles, and this is dispersed in a dispersion solution.
- a method of selectively adsorbing the conductive particles inside the hole and slightly outside the inside of the hole by immersing it in the hole can be cited.
- examples of the metal alkoxide to be used include alkoxides such as Cu, Ni, Ti, and Fe.
- metal particles are used as the conductive particles
- a metal film is attached to one surface of the porous film, and the electrode is used as an electrode, and then the metal film is removed by etching. And a method of selectively depositing metal particles slightly outside the inside of the hole. (Formation of adhesive layer)
- the adhesive layer material is applied using a known application method such as a coater. And a method of laminating a film-shaped adhesive layer prepared in advance.
- the adhesive layer 16 is flow-excluded.
- the conductive material 14 is interposed between the electrode 36 of the substrate 32 and the electrode 38 of the substrate 34.
- the electrodes 36 and 38 are electrically connected via the conductive material 14.
- the adjacent electrodes 36 (38) are electrically insulated by the adhesive layer 16.
- the substrate 32 and the substrate 34 are mechanically connected by the curing of the adhesive layer 16.
- this polymer solution was cast with a coating film thickness of 780 [m] on a petri dish ( ⁇ 90 [mm]) to which air with a relative humidity of 50% was continuously blown, and the cross-hole form was removed. Volatilized.
- FIG. 6 there are a large number of holes penetrating in the film thickness direction, the holes are arranged in a honeycomb shape, and the inner wall surfaces of the holes are curved outward.
- a porous membrane made of polysulfone was obtained. The pore diameter of the pores of the porous membrane was about 5 ⁇ .
- bisphenol A type epoxy resin manufactured by Japan Epoxy Resin, “Epicoat 1001”
- NBR manufactured by Nippon Zeon, “Nipole 1 072 J”
- imidazole curing agent manufactured by Shikoku Chemicals, Cure sol C11Z
- this adhesive layer was laminated on both sides of the porous film in which the Ag particles were filled in the pores, to produce the anisotropic conductive film according to Example 1.
- Example 2 was repeated in the same manner as in Example 1 except that the polysulfone was dissolved at a concentration of 0.2 [wt%] in the mouthpiece form, and the coating film thickness was changed to 1560 [ ⁇ m].
- Such an anisotropic conductive film was produced.
- FIGS. 8 and 9 show a porous film made of polysulfone and a porous film filled with Ag particles in the pores, respectively, obtained at the time of producing the anisotropic conductive film according to Example 2.
- the pore diameter of the pores of the porous membrane was about 10;
- FIGS. 10 and 11 show a porous film made of a siloxane-modified polyimide and a porous film filled with Ag particles in the pores obtained when the anisotropic conductive film according to Example 3 was produced. Show. In addition, The pore diameter of the pores of the membrane was about 5 ⁇ m.
- FIGS. 12 and 13 show a porous film made of siloxane-modified polyimide and a porous film filled with Ag particles in the pores, which were obtained at the time of producing the anisotropic conductive film according to Example 4. Show.
- the pore size of the pores of the porous membrane was about 13 ⁇ m.
- a polyamic acid consisting of 29.4 g (0.1 mo 1) of biphenylinoletetracarboxylic anhydride (B PDA) and 20.0 g (0.1 mo 1) of diaminodiphenylenoate ether (DDE) is converted to N
- B PDA biphenylinoletetracarboxylic anhydride
- DDE diaminodiphenylenoate ether
- NMP —methyl-2-pyrrolidone
- this solution was slowly poured into 2 L of ethyl acetate, reprecipitated, filtered, and dried to prepare 35 g of polyamic acid powder.
- this polymer solution is continuously blown with 50% relative humidity air. It was cast on a petri dish ( ⁇ 90 [mm]) with a coating film thickness of 780 [ ⁇ m] to volatilize the black mouth form. As a result, a precursor film composed of a polyimide precursor in which many holes penetrating in the film thickness direction were arranged in a honeycomb shape was obtained.
- pyridine 3: 1: 1 for 10 minutes to imidize the polyionic complex.
- a film was obtained.
- the cationic lipid was removed by rinsing with ethanol.
- the pore diameter of the pores of the porous membrane was about 4 ⁇ m.
- the above porous membrane was immersed in an Ag ethanol dispersion solution (manufactured by Nippon Paint Co., Ltd., “Fine Sphere SVE102”, average particle diameter 50 nm) with a concentration of 3 [wt%], and 5 [ ⁇ / sec].
- an Ag ethanol dispersion solution manufactured by Nippon Paint Co., Ltd., “Fine Sphere SVE102”, average particle diameter 50 nm
- the filled Ag particles were thermally fused by heating at 150 ° C. for 5 minutes.
- the adhesive layer was laminated on both sides of the porous film in which the pores were filled with Ag particles, whereby an anisotropic conductive film according to Example 5 was produced.
- Example 6 An anisotropic conductive film according to Example 6 was produced in the same manner as in Example 5.
- the pore diameter at the end of the porous film made of polyimide obtained at the time of producing the anisotropic conductive film according to Example 6 was about 8 ⁇ .
- the conductivity in the film thickness direction and the insulation performance in the film surface direction were evaluated to evaluate the anisotropic conductivity.
- the conduction performance in the film thickness direction was evaluated as follows. That is, one surface of each of the anisotropic conductive films according to Examples 1 to 6 was combined with a comb-shaped electrode 40 having a predetermined pitch shown in FIG. (Comb-shaped electrodes) insulated from each other by (4). Next, as shown in FIG. 15 (a), each of the anisotropic conductive films 10 on which the comb-shaped electrode 40 was temporarily pressed was placed so that the other side was in contact with the same plate 48 laminated on the glass plate 46. Each of them was placed and subjected to final pressure bonding at 170 ° C for 20 sec.
- the samples A 1 to A 6 (subscripts of A correspond to the numbers of the examples) obtained in this manner were used to evaluate the conduction performance with a tester 50.
- the pitch P of the comb-shaped electrodes 40 was set to 30 m, and Example 2, Example 4 and Example 4 were performed.
- the pitch P of the comb electrodes was 100 ⁇ m.
- the evaluation of the insulation performance in the film surface direction was performed as follows. That is, one surface of each of the anisotropic conductive films according to Examples 1 to 6 was Each was temporarily press-bonded to 0. Next, as shown in FIG. 15 (b), the anisotropic conductive films 10 on which the comb-shaped electrodes 40 were pre-pressed were placed so that the other side was in contact with the glass plate 46, and 170 ° This was completely crimped at CX 20 sec.
- the anisotropic conductive film according to this example had sufficient anisotropic conductivity.
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Abstract
Description
Claims
Priority Applications (2)
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US10/593,622 US20070212521A1 (en) | 2004-03-30 | 2005-03-29 | Anisotropic Conductive Film and a Method of Manufacturing the Same |
JP2006511861A JPWO2005096442A1 (ja) | 2004-03-30 | 2005-03-29 | 異方性導電膜およびその製造方法 |
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JP2004-097384 | 2004-03-30 | ||
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US (1) | US20070212521A1 (ja) |
JP (1) | JPWO2005096442A1 (ja) |
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JP2006236786A (ja) * | 2005-02-25 | 2006-09-07 | Tokai Rubber Ind Ltd | 異方性導電膜の製造方法 |
JP2007257947A (ja) * | 2006-03-22 | 2007-10-04 | Furukawa Electric Co Ltd:The | 異方性導電フィルム及びその製造方法 |
US8247701B2 (en) * | 2006-04-27 | 2012-08-21 | Asahi Kasei Emd Corporation | Electroconductive particle placement sheet and anisotropic electroconductive film |
US8980770B2 (en) * | 2006-11-06 | 2015-03-17 | Hexcel Composites Limited | Composite materials |
KR20150067060A (ko) * | 2013-12-09 | 2015-06-17 | 주식회사 전영 | 전도성 접착 조성물 및 이를 이용한 접착 필름 |
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JP2007091959A (ja) * | 2005-09-30 | 2007-04-12 | Sumitomo Electric Ind Ltd | 異方導電性接着剤 |
KR101043956B1 (ko) * | 2009-07-31 | 2011-06-24 | 전자부품연구원 | 비등방성 입자배열체 및 그 제조 방법 |
US9475963B2 (en) | 2011-09-15 | 2016-10-25 | Trillion Science, Inc. | Fixed array ACFs with multi-tier partially embedded particle morphology and their manufacturing processes |
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JP6661969B2 (ja) * | 2014-10-28 | 2020-03-11 | デクセリアルズ株式会社 | 異方性導電フィルム及び接続構造体 |
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KR20170130003A (ko) * | 2016-05-17 | 2017-11-28 | 삼성디스플레이 주식회사 | 이방성 도전 필름을 포함하는 표시 장치 및 이방성 도전 필름의 제조 방법 |
CN107960004A (zh) * | 2016-10-14 | 2018-04-24 | 鹏鼎控股(深圳)股份有限公司 | 可伸缩电路板及其制作方法 |
CN108430150B (zh) * | 2017-02-13 | 2021-02-26 | 鹏鼎控股(深圳)股份有限公司 | 具有弹性线路的电路板及其制作方法 |
JP2019114510A (ja) * | 2017-12-26 | 2019-07-11 | 三星エスディアイ株式会社Samsung SDI Co., Ltd. | 異方性導電フィルム、その硬化物およびその製造方法 |
DE102018124838B4 (de) * | 2018-10-09 | 2023-02-23 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Photovoltaiksubstrat, Photovoltaikelement und Verfahren zu dessen Herstellung |
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US8247701B2 (en) * | 2006-04-27 | 2012-08-21 | Asahi Kasei Emd Corporation | Electroconductive particle placement sheet and anisotropic electroconductive film |
US8980770B2 (en) * | 2006-11-06 | 2015-03-17 | Hexcel Composites Limited | Composite materials |
US9603229B2 (en) | 2006-11-06 | 2017-03-21 | Hexcel Composites Limited | Composite materials |
KR20150067060A (ko) * | 2013-12-09 | 2015-06-17 | 주식회사 전영 | 전도성 접착 조성물 및 이를 이용한 접착 필름 |
KR101714771B1 (ko) | 2013-12-09 | 2017-03-15 | 주식회사 전영 | 전도성 접착 조성물 및 이를 이용한 접착 필름 |
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US20070212521A1 (en) | 2007-09-13 |
KR20070010015A (ko) | 2007-01-19 |
JPWO2005096442A1 (ja) | 2008-02-21 |
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